CN107425556A - Battery balanced device and battery equalization method - Google Patents
Battery balanced device and battery equalization method Download PDFInfo
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- CN107425556A CN107425556A CN201611177237.2A CN201611177237A CN107425556A CN 107425556 A CN107425556 A CN 107425556A CN 201611177237 A CN201611177237 A CN 201611177237A CN 107425556 A CN107425556 A CN 107425556A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000005611 electricity Effects 0.000 claims abstract description 47
- 239000004065 semiconductor Substances 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003685 thermal hair damage Effects 0.000 abstract description 3
- 238000013021 overheating Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The present invention provides a kind of battery balanced device and battery equalization method, battery balanced device includes control module, voltage acquisition module, power resistor and several switch modules, control module electrically connects with voltage acquisition module, voltage acquisition module electrically connects with some economize on electricity cores of battery pack, each economize on electricity core is corresponding with a switch module, and is electrically connected respectively with control module and power resistor by corresponding switch module.The present invention saves the quantity of power resistor, so as to be effectively reduced the manufacturing cost of battery balanced device and design cost, and substantially reduces circuit board size, preferably meets the requirement to spaces compact and aspect simple in construction in each application field.Meanwhile the present invention can also prevent power resistor from crossing cause thermal damage, play a part of protecting power resistor, and when excessively balanced, because the coil both end voltage of two-way relay be less than pick-up voltage scope, the automatic disconnection of switch, play certain protection and cross the effect of putting.
Description
Technical field
The present invention relates to a kind of battery balanced device and battery equalization method, the passive balanced dress of more particularly to a kind of battery
Put and method.
Background technology
Battery does not have absolute uniformity, and after in groups, the capacity volume variance between battery will shadow beyond certain threshold value
The actually available capacity of whole battery pack is rung, so, battery is in life-span of the life-span later in groups well below cell, master
It is the individual difference between battery to want reason, and when causing charging, the maximum battery of capacity easily overcharges, and during electric discharge, capacity is minimum
Battery again easy mistake put, into vicious circle so that Individual cells are damaged, and influence the charge-discharge characteristic of whole battery pack, electricity
Pond pool-size reduces.In order to extend the service life of battery pack, it is necessary to carry out equilibrium to the battery of difference.
At present, there are two kinds of battery balanced modes, respectively active equalization and passive equilibrium.Active equalization energy loss is small,
But circuit is complicated, cost is higher, therefore at present or conventional passive balanced.It is but passive balanced typically with each economize on electricity
A switch in parallel and a power resistor on pond, by taking 48V lithium titanate batteries as an example, it is made up of 20 economize on electricity cores, it is desirable to 20
Individual power resistor, except increasing cost, it also greatly increases circuit board size.Spaces compact and simple in construction is being advocated now
Auto age, it is out of season.In addition by the way of simultaneously balanced, circuit board heating can be caused or even burn out component.
The content of the invention
The technical problem to be solved in the present invention is to overcome the passive balancer cost of idleness of battery in the prior art, is increased
A kind of the defects of adding circuit board size, and being likely to result in circuit board heating or even burn out component, there is provided battery balanced device
And battery equalization method.
The present invention is that solve above-mentioned technical problem by following technical proposals：
A kind of battery balanced device, its feature are that the battery balanced device includes control module, voltage acquisition mould
Block, power resistor and several switch modules, the control module electrically connect with the voltage acquisition module, the voltage acquisition
Module electrically connects with some economize on electricity cores of battery pack, and each economize on electricity core is corresponding with a switch module, and passes through corresponding switch
Module electrically connects with the control module and the power resistor respectively；
The voltage acquisition module is used for the magnitude of voltage for gathering each economize on electricity core respectively according to the first predeterminated frequency, and respectively
Send to the control module, after magnitude of voltage of the control module for receiving each economize on electricity core, calculate several voltages
The average voltage level of value, and the difference of each magnitude of voltage and the average voltage level is calculated respectively, the control module is also used
It is more than the average voltage level in detection magnitude of voltage, and corresponding difference is more than the battery core of predetermined threshold value, and equalizing signal is sent out
Switch module corresponding to the battery core detected is delivered to, the corresponding switch module is closed after receiving equalizing signal, made described
The battery core detected electrically connects with the power resistor.
Detect that the magnitude of voltage of more piece battery core is more than the average voltage level it is preferred that working as, and corresponding difference is more than in advance
If during threshold value, the control module sends equalizing signal into the more piece battery core detected corresponding to magnitude of voltage highest battery core
Switch module；
It is preferred that when magnitude of voltage highest battery core is that n is saved in the more piece battery core detected, n is described more than or equal to 2
Control module sends equalizing signal according to the second predeterminated frequency economize on electricity core to n in switch corresponding to the different battery core of any one section
Module, second predeterminated frequency is more than or equal to 5ms, and is less than first predeterminated frequency.
In this programme, for the time balanced to battery core can not be too short consideration, second predeterminated frequency should be big
In or equal to 5ms.
It is preferred that first predeterminated frequency is 10ms；And/or
The control module is MCU (Micro Control Unit, micro-control unit)；And/or
The voltage acquisition module by CAN (Controller Area Network, controller local area network) buses with
The control module electrical connection.
It is preferred that each switch module includes two-way relay and metal-oxide-semiconductor (Metal-Oxide-
Semiconductor, Metal-oxide-semicondutor), each economize on electricity core by the double-pole switch of corresponding two-way relay with
The power resistor electrical connection, and pass through the coil of corresponding two-way relay and corresponding metal-oxide-semiconductor and control module electricity
Connection.
In this programme, when the voltage of battery core is dropped to below the rated voltage of two-way relay, in the control module
Before also not sending open command, two-way relay can first disconnect switch, so as to prevent putting.
It is preferred that the battery balanced device also include PTC (Positive Temperature Coefficient, just
Temperature coefficient) thermistor, the PTC thermistor is connected serially to the power resistor, and each economize on electricity core passes through corresponding switch
Module electrically connects with the PTC thermistor.
In this programme, due to there was only a power resistor electric discharge, to prevent power resistor from overheating, gone here and there on power resistor
Join a PTC thermistor, as temperature rise resistance can also raise, cause euqalizing current to diminish, can be with when equilibrium starts
High current is balanced, improves balancing speed, and the phase can be balanced with low current after equalization, prevents the voltage of battery core from dropping to average voltage level
Below.
A kind of battery equalization method, its feature are that the battery equalization method utilizes battery balanced device described above
To realize, the battery equalization method comprises the following steps：
S1, the voltage acquisition module gather the magnitude of voltage of each economize on electricity core respectively according to the first predeterminated frequency, and respectively
Send to the control module；
S2, after the control module receives the magnitude of voltage of each economize on electricity core, calculate the average voltage of several magnitudes of voltage
Value, and the difference of each magnitude of voltage and the average voltage level is calculated respectively；
S3, control module detection magnitude of voltage be more than the average voltage level, and corresponding difference is more than predetermined threshold value
Battery core, and equalizing signal is sent to switch module corresponding to the battery core detected, it is described corresponding to switch module receive
Closed after equalizing signal, the battery core detected is electrically connected with the power resistor.
It is preferred that in step S3In, when the magnitude of voltage for detecting more piece battery core is more than the average voltage level, and it is corresponding
When difference is more than predetermined threshold value, equalizing signal is sent the magnitude of voltage highest into the more piece battery core detected by the control module
Switch module corresponding to battery core；
It is preferred that when magnitude of voltage highest battery core is that n is saved in the more piece battery core detected, n is described more than or equal to 2
Control module sends equalizing signal according to the second predeterminated frequency economize on electricity core to n in switch corresponding to the different battery core of any one section
Module, second predeterminated frequency is more than or equal to 5ms, and is less than first predeterminated frequency.
In this programme, for the time balanced to battery core can not be too short consideration, second predeterminated frequency should be big
In or equal to 5ms.
It is preferred that first predeterminated frequency is 10ms；And/or
The control module is MCU；And/or
The voltage acquisition module is electrically connected by CAN with the control module.
It is preferred that each switch module includes two-way relay and metal-oxide-semiconductor, each economize on electricity core passes through corresponding two-way
The double-pole switch of relay electrically connects with the power resistor, and the coil by corresponding two-way relay and corresponding MOS
Pipe electrically connects with the control module.
In this programme, when the voltage of battery core is dropped to below the rated voltage of two-way relay, in the control module
Before also not sending open command, two-way relay can first disconnect switch, so as to prevent putting.
It is preferred that the battery balanced device also includes PTC thermistor, the PTC thermistor is connected serially to the work(
Rate resistance, each economize on electricity core are electrically connected by corresponding switch module with the PTC thermistor.
In this programme, due to there was only a power resistor electric discharge, to prevent power resistor from overheating, gone here and there on power resistor
Join a PTC thermistor, as temperature rise resistance can also raise, cause euqalizing current to diminish, can be with when equilibrium starts
High current is balanced, improves balancing speed, and the phase can be balanced with low current after equalization, prevents the voltage of battery core from dropping to average voltage level
Below.
It on the basis of common sense in the field is met, above-mentioned each optimum condition, can be combined, it is each preferably real to produce the present invention
Example.
The positive effect of the present invention is：
The present invention saves the quantity of power resistor, so as to be effectively reduced the manufacturing cost of battery balanced device and be designed to
This, and substantially reduces circuit board size, preferably meets in each application field to spaces compact and aspect simple in construction
It is required that.Meanwhile the present invention can also prevent power resistor from crossing cause thermal damage, play a part of protecting power resistor, and when excessively balanced,
Because the coil both end voltage of two-way relay is less than pick-up voltage scope, switch it is automatic disconnect, play certain protection and cross and put work
With.
Brief description of the drawings
Fig. 1 is the battery balanced device of present pre-ferred embodiments and the circuit connection diagram of battery core.
Fig. 2 is the flow chart of the battery equalization method of present pre-ferred embodiments.
Embodiment
Name preferred embodiment, and become apparent from intactly illustrating the present invention with reference to accompanying drawing.
As shown in figure 1, the battery balanced device that the present embodiment provides includes 1, PTC thermistor of a power resistor
2nd, n switch module, voltage acquisition module 5 and control module, wherein, each switch module includes a two-way relay respectively
Device and a metal-oxide-semiconductor group, each two-way relay include double-pole switch 31 and coil 32 respectively, and each metal-oxide-semiconductor group includes
NMOS (N-Metal-Oxide-Semiconductor, N-type Metal-oxide-semicondutor) pipes 41 and PMOS (P-Metal-
Oxide-Semiconductor, p-type Metal-oxide-semicondutor) pipe 42, in the present embodiment, the control module is
MCU6, other process chips also can be selected certainly.
Voltage acquisition module 5 electrically connects with the n economize on electricity cores 7 of battery pack that need to be balanced respectively, each economize on electricity core 7 and one pair
Road relay and metal-oxide-semiconductor group are corresponding, each economize on electricity core 7 respectively by corresponding double-pole switch 31 successively with power resistor 1
And PTC thermistor 2 electrically connects, power resistor 1 is connected with PTC thermistor 2, and each economize on electricity core 7 passes through corresponding line respectively
Circle 32 and metal-oxide-semiconductor group are electrically connected with MCU6, and voltage acquisition module 5 is electrically connected by CAN with MCU6, in the present embodiment,
Do not limit the quantity and model of all parts specifically, can be adjusted correspondingly according to actual conditions.
Specifically, voltage acquisition module 5 is used for the magnitude of voltage for gathering each economize on electricity core 7 respectively according to the first predeterminated frequency,
And MCU6 is respectively sent to, in the present embodiment, first predeterminated frequency is set as 10ms, you can is considered whole device
Poll time, certainly also can be according to actual conditions sets itself.After magnitudes of voltage of the MCU6 for receiving each economize on electricity core 7, meter
The average voltage level of n magnitude of voltage is calculated, and calculates the difference of each magnitude of voltage and the average voltage level respectively, MCU6 is also used
It is more than the average voltage level in detection magnitude of voltage, and corresponding difference is more than a section or more piece battery core 7 for predetermined threshold value, works as inspection
When the battery core 7 measured is a section, MCU6 sends equalizing signal to metal-oxide-semiconductor group corresponding to the battery core 7 detected, when what is detected
When battery core 7 is more piece, MCU6 sends equalizing signal into the more piece battery core detected corresponding to magnitude of voltage highest battery core 7
Metal-oxide-semiconductor group, when magnitude of voltage highest battery core 7 is that m is saved in the more piece battery core 7 detected, m is more than or equal to 2, MCU6 according to the
Two predeterminated frequencies send equalizing signal metal-oxide-semiconductor group corresponding to the battery core 7 that any one section is different into m economize on electricity cores 7, but are in order at
The time balanced to battery core can not be too short consideration, second predeterminated frequency is more than or equal to 5ms, and it is pre- to be less than described first
If frequency, in the present embodiment, second predeterminated frequency is 5ms, you can in a polling time period, be can be transmitted twice
Equalizing signal is to two magnitude of voltage highest battery cores 7.
Detailed description below carries out balanced flow to battery core.
With first battery core, i.e. G1Exemplified by the corresponding battery core in end, when not receiving equalizing signal, G1Hold as low level, it is right
The NMOS tube 41 answered turns off, PMOS 42 turns on, S1With C1In the conduction state, now corresponding 32 no electric current of coil flows through,
Therefore double-pole switch 31 corresponding to disconnects, and can not carry out equilibrium.When receiving equalizing signal, MCU6 makes G1Hold as high level, i.e.,
Put G1=" 1 ", S1With C1Disconnect, with C0Conducting, now coil 32 has electric current to flow through, and double-pole switch 31 closes, power resistor 1 and C1
Parallel connection, C1Electric discharge, it is balanced so as to be carried out to battery core.
In the present embodiment, due to only having a power resistor 1 to discharge, to prevent power resistor 1 from overheating, in power resistor
One PTC thermistor 2 of series connection on 1, as temperature rise resistance can also raise, cause euqalizing current to diminish, start in equilibrium
When can be balanced with high current, improve balancing speed, the phase can be balanced with low current after equalization, prevent battery core voltage drop to it is average
Below magnitude of voltage.Meanwhile when the voltage of battery core is dropped to below the rated voltage of two-way relay, do not sent also in MCU disconnected
Before opening instruction, two-way relay can first disconnect switch, so as to prevent putting.
As shown in Fig. 2 the present embodiment also provides a kind of battery equalization method, the battery equalization method is using described above
Battery balanced device realizes that the battery equalization method comprises the following steps：
Step 101, voltage acquisition module gather the magnitude of voltage of each economize on electricity core every 10ms, and are respectively sent to control respectively
Molding block.
Voltage acquisition module gathers the magnitude of voltage of each economize on electricity core according to the first predeterminated frequency respectively, in the present embodiment,
First predeterminated frequency is set as 10ms, you can it is considered the poll time of one-shot battery equalization methods, certainly also can basis
Actual conditions sets itself.
After step 102, control module receive the magnitude of voltage of each economize on electricity core, the average voltage level of n magnitude of voltage is calculated,
And the difference of each magnitude of voltage and average voltage level is calculated respectively.
Step 103, control module detection magnitude of voltage are more than average voltage level, and corresponding difference is more than the one of predetermined threshold value
Section or more piece battery core, and equalizing signal is sent into the section or more piece battery core detected corresponding to magnitude of voltage highest battery core
Switch module, corresponding switch module close after receiving equalizing signal, and the battery core for making to detect electrically connects with power resistor.
Specifically, MCU detection magnitudes of voltage are more than average voltage level, and corresponding difference is more than a section or more of predetermined threshold value
Economize on electricity core, and when the battery core detected is a section, MCU sends equalizing signal to metal-oxide-semiconductor group corresponding to the battery core detected, when
When the battery core detected is more piece, equalizing signal is sent into the more piece battery core detected magnitude of voltage highest battery core pair by MCU
The metal-oxide-semiconductor group answered, when in the more piece battery core detected magnitude of voltage highest battery core be m save when, m be more than or equal to 2, MCU according to
Second predeterminated frequency sends equalizing signal metal-oxide-semiconductor group corresponding to the battery core that any one section is different into m economize on electricity cores, but is in order at
The time balanced to battery core can not be too short consideration, second predeterminated frequency is more than or equal to 5ms, and it is pre- to be less than described first
If frequency, in this method embodiment, second predeterminated frequency is 5ms, you can in a polling time period, be can be transmitted
Equalizing signal is to two magnitude of voltage highest battery cores 7 twice.
Balanced flow is carried out in detailed description below this method embodiment to battery core.
With reference to shown in Fig. 1, with first battery core, i.e. G1Exemplified by the corresponding battery core in end, when not receiving equalizing signal, G1
Hold as low level, corresponding NMOS tube 41 turns off, PMOS 42 turns on, S1With C1It is in the conduction state, now corresponding coil 32
There is no electric current to flow through, therefore corresponding double-pole switch 31 disconnects, and can not carry out equilibrium.When receiving equalizing signal, MCU6 makes G1
Hold as high level, that is, put G1=" 1 ", S1With C1Disconnect, with C0Conducting, now coil 32 has electric current to flow through, and double-pole switch 31 closes
Close, power resistor 1 and C1Parallel connection, C1Electric discharge, it is balanced so as to be carried out to battery core.
In this method embodiment, due to there was only a power resistor electric discharge, to prevent power resistor from overheating, in power electricity
One PTC thermistor of series connection in resistance, as temperature rise resistance can also raise, cause euqalizing current to diminish, start in equilibrium
When can be balanced with high current, improve balancing speed, the phase can be balanced with low current after equalization, prevent battery core voltage drop to it is average
Below magnitude of voltage.Meanwhile when the voltage of battery core is dropped to below the rated voltage of two-way relay, do not sent also in MCU disconnected
Before opening instruction, two-way relay can first disconnect switch, so as to prevent putting.
Battery balanced device and method that the present embodiment provides can save the quantity of power resistor, so as to be effectively reduced electricity
The manufacturing cost and design cost of pond balancer, and circuit board size is substantially reduced, preferably meet each application field
In requirement to spaces compact and aspect simple in construction.Meanwhile can also prevent power resistor from crossing cause thermal damage, play protection power electricity
The effect of resistance, and when excessively balanced, because the coil both end voltage of two-way relay is less than pick-up voltage scope, switch from dynamic circuit breaker
Open, play certain protection and cross the effect of putting.
Although the embodiment of the present invention is the foregoing described, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
On the premise of the principle and essence of the present invention, various changes or modifications can be made to these embodiments, but these changes and
Modification each falls within protection scope of the present invention.
Claims (10)
- A kind of 1. battery balanced device, it is characterised in that the battery balanced device include control module, voltage acquisition module, Power resistor and several switch modules, the control module electrically connect with the voltage acquisition module, the voltage acquisition mould Block electrically connects with some economize on electricity cores of battery pack, and each economize on electricity core is corresponding with a switch module, and passes through corresponding switching molding Block electrically connects with the control module and the power resistor respectively；The voltage acquisition module is used for the magnitude of voltage for gathering each economize on electricity core respectively according to the first predeterminated frequency, and sends respectively To the control module, after magnitude of voltage of the control module for receiving each economize on electricity core, several magnitudes of voltage are calculated Average voltage level, and the difference of each magnitude of voltage and the average voltage level is calculated respectively, the control module is additionally operable to examine Survey magnitude of voltage and be more than the average voltage level, and corresponding difference is more than the battery core of predetermined threshold value, and by equalizing signal send to Switch module corresponding to the battery core detected, the corresponding switch module close after receiving equalizing signal, make the detection The battery core arrived electrically connects with the power resistor.
- 2. battery balanced device as claimed in claim 1, it is characterised in that when the magnitude of voltage for detecting more piece battery core is more than institute Average voltage level is stated, and when corresponding difference is more than predetermined threshold value, the control module sends equalizing signal to detecting Switch module corresponding to magnitude of voltage highest battery core in more piece battery core；It is preferred that when magnitude of voltage highest battery core is that n is saved in the more piece battery core detected, n is more than or equal to 2, the control Module sends equalizing signal according to the second predeterminated frequency economize on electricity core to n in switching molding corresponding to the different battery core of any one section Block, second predeterminated frequency is more than or equal to 5ms, and is less than first predeterminated frequency.
- 3. battery balanced device as claimed in claim 1, it is characterised in that first predeterminated frequency is 10ms；And/orThe control module is MCU；And/orThe voltage acquisition module is electrically connected by CAN with the control module.
- 4. battery balanced device as claimed in claim 1, it is characterised in that each switch module includes two-way relay And metal-oxide-semiconductor, each economize on electricity core are electrically connected by the double-pole switch of corresponding two-way relay with the power resistor, and by right The coil and corresponding metal-oxide-semiconductor for the two-way relay answered electrically connect with the control module.
- 5. the battery balanced device as described in any one in Claims 1 to 4, it is characterised in that the battery balanced device Also include PTC thermistor, the PTC thermistor is connected serially to the power resistor, and each economize on electricity core passes through corresponding switch Module electrically connects with the PTC thermistor.
- 6. a kind of battery equalization method, it is characterised in that the battery equalization method is equal using battery as claimed in claim 1 Device weigh to realize, the battery equalization method comprises the following steps：S1, the voltage acquisition module gathers the magnitude of voltage of each economize on electricity core according to the first predeterminated frequency, and is respectively sent to respectively The control module；S2, after the control module receives the magnitude of voltage of each economize on electricity core, calculate the average voltage level of several magnitudes of voltage, and The difference of each magnitude of voltage and the average voltage level is calculated respectively；S3, control module detection magnitude of voltage be more than the average voltage level, and corresponding difference is more than the electricity of predetermined threshold value Core, and equalizing signal is sent to switch module corresponding to the battery core detected, the corresponding switch module and receives equilibrium Closed after signal, the battery core detected is electrically connected with the power resistor.
- 7. battery equalization method as claimed in claim 6, it is characterised in that in step S3In, when the electricity for detecting more piece battery core Pressure value is more than the average voltage level, and when corresponding difference is more than predetermined threshold value, the control module sends equalizing signal The switch module corresponding to magnitude of voltage highest battery core into the more piece battery core detected；It is preferred that when magnitude of voltage highest battery core is that n is saved in the more piece battery core detected, n is more than or equal to 2, the control Module sends equalizing signal according to the second predeterminated frequency economize on electricity core to n in switching molding corresponding to the different battery core of any one section Block, second predeterminated frequency is more than or equal to 5ms, and is less than first predeterminated frequency.
- 8. battery equalization method as claimed in claim 6, it is characterised in that first predeterminated frequency is 10ms；And/orThe control module is MCU；And/orThe voltage acquisition module is electrically connected by CAN with the control module.
- 9. battery equalization method as claimed in claim 6, it is characterised in that each switch module includes two-way relay And metal-oxide-semiconductor, each economize on electricity core are electrically connected by the double-pole switch of corresponding two-way relay with the power resistor, and by right The coil and corresponding metal-oxide-semiconductor for the two-way relay answered electrically connect with the control module.
- 10. the battery equalization method as described in any one in claim 6~9, it is characterised in that the battery balanced device Also include PTC thermistor, the PTC thermistor is connected serially to the power resistor, and each economize on electricity core passes through corresponding switch Module electrically connects with the PTC thermistor.
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| CN108418274A (en) * | 2018-04-02 | 2018-08-17 | 广州昂宝电子有限公司 | Multiport battery charger |
| CN108631413A (en) * | 2018-07-04 | 2018-10-09 | 樊朝晖 | A kind of battery protecting apparatus and its method based on blocking type PTC |
| CN112009309A (en) * | 2019-05-13 | 2020-12-01 | 北京车和家信息技术有限公司 | Equalization circuit, design method thereof and battery management system |
| CN112858939A (en) * | 2021-01-27 | 2021-05-28 | 东莞市谦顺电子科技有限公司 | Safe intelligent starting power supply with lead-acid storage battery detection function |
| CN114465327A (en) * | 2022-03-22 | 2022-05-10 | 西安工业大学 | Multi-path selection battery electric quantity balance control method and device |
| WO2024108819A1 (en) * | 2022-11-22 | 2024-05-30 | 维谛技术有限公司 | Battery cell voltage balancing method and apparatus and power supply system |
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| CN112858939A (en) * | 2021-01-27 | 2021-05-28 | 东莞市谦顺电子科技有限公司 | Safe intelligent starting power supply with lead-acid storage battery detection function |
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Application publication date: 20171201 |